feat: include array item descriptions in generated TypeScript

Fixes #660 by modifying the generator to include item descriptions 
when generating standalone array types. Array item descriptions are 
now included in the TypeScript comment as "Array items: [description]".

Co-authored-by: bcherny <bcherny@users.noreply.github.com>

Author: claude[bot]

src/generator.ts

@@ -360,8 +360,18 @@ function generateStandaloneInterface(ast: TNamedInterface, options: Options): st
 }
 
 function generateStandaloneType(ast: ASTWithStandaloneName, options: Options): string {
+  let comment = ast.comment
+  
+  // For arrays, include item description in the comment if it exists
+  if (ast.type === 'ARRAY' && hasComment(ast.params)) {
+    const itemComment = ast.params.comment
+    if (itemComment) {
+      comment = comment ? `${comment}\n\nArray items:\n${itemComment}` : `Array items:\n${itemComment}`
+    }
+  }
+  
   return (
-    (hasComment(ast) ? generateComment(ast.comment) + '\n' : '') +
+    (comment ? generateComment(comment, ast.deprecated) + '\n' : '') +
     `export type ${toSafeString(ast.standaloneName)} = ${generateType(
       omit<AST>(ast, 'standaloneName') as AST /* TODO */,
       options,

test/e2e/arrayWithItemDescription.js

@@ -0,0 +1,23 @@
+module.exports = {
+  input: {
+    $schema: 'http://json-schema.org/draft-07/schema#',
+    title: 'peoples',
+    type: 'array',
+    description: '@group Shared/QueryString\n@description <adult>,<child age>|<child age>',
+    items: {
+      type: 'string',
+      description: '@group Shared/QueryString/REGEXP\n@description travel peoples QueryString(<adult>,<child age>|<child age>|...)',
+      pattern: '^\\d+,(?:\\d+)(?:-\\d+)*$',
+      examples: ['2,5-7', '1,3-4-5'],
+    },
+  },
+  expected: `/**
+ * @group Shared/QueryString
+ * @description <adult>,<child age>|<child age>
+ *
+ * Array items:
+ * @group Shared/QueryString/REGEXP
+ * @description travel peoples QueryString(<adult>,<child age>|<child age>|...)
+ */
+export type Peoples = string[];`
+}